Bicycle.



Patented Feb. 6, |900.-

(No Model.)

UNTTED y STATES PATENT OFFICE.

J ULIUS FRIEDRICH ALFRED RUNGE, OF LEIPSIC, GERMANY.

BICYCLE.

SPECIFICATION formingpart of Letters Patent No. 642,758, dated February6, 1900.

Application filed February 18, 1898. Serial No. 670,777. (No model.)

To rtZZ whom, it may concern:

Be it known that I, J ULIUs FRIEDRICH AL- FRED RUNGE, a subject of theKing of Saxony, residing at Leipsic, in the Kingdom of Saxony, GermanEmpire, have invented certain'new and useful Improvements in BicycleMovements, (for which I have applied for patents in Germany, datedJanuary 14, 1898; in Austria, dated January 15, 1898; in Hungary, datedJanuary 19, 1898, No. 840; in Sweden, dated January 15, 1898, No. 69; inNorway, dated January 19, 1898, No. 9,375; in Denmark, dated January 14,1898, No. 48; in France,dated January 20, 1898, No.261,995; in Belgium,dated January v20, 1898, No. 103,846, and in Switzerland, dated January15, 1898, No. 17,481,) of which the following is a specification.

The object of the present application is a movement for bicycles. Thismovement is brought about neither by pedaling nor by a pushing orturning movement, but by an upand-down movement of the seat, as inriding.

The method of execution is illustrated in the drawings.

Figure 1 is a side view of the new movement, and Fig. 2 is a section ofthe same on an enlarged scale.

As is shown in the drawings, the seat-pillar tube is provided with slotsb. The seat-pillar c moves easily and works in the seat-pillar tube a,while the upward movement which the spiral spring e imparts to it ischecked by the strong bolt CZ, which passes through the slots b.Foot-rests f, applied to the frame, yield a support to the feet, while asliding bar g brings a connection between the saddlepillar guide-bolt dand the chain-wheel h. To equalize the pressure on the hub, a wheel k,corresponding to the chain-wheel, and a second sliding bar Z can beprovided, Fig. 2. The method of working is as follows:

The rider sets the machine in motion with a push and swings himself intothe saddle. He places his feet in the immovable fixed rests f and seatshimself on the saddle 'L'. Then he presses this down and by means of thebar g, attached tothe seat-pillar c, makes the chain-wheel h revolve, bywhich the back wheel is set in motion by chain transmission.

The movement can of course be applied directly to the back wheel orindirectly by means of rack and pinion or friction-wheels.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-v In a bicycle a hollow stationary tube a, suitably securedto connections with the frame and provided with a slot b, to receive thebolt CZ and a seat-bar c, having a vertical movement in said tube, incombination with the spring e, for imparting an upward movement to theseat-bar, and a connecting-rod pivoted at its upper end to the bolt CZ,and at its lower end to connections for imparting rotating movement tothe rear wheel of the bicycle.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

JULIUS FRIEDRICH ALFRED RUNGE.

Witnesses CURT TEICHER, RUDOLPH FRICKE.

